A train has a speed of 60km/hr for the first hour and 40km/hr for the next half hour. Find its average speed in km/hr.
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sangharsh1234Ace
Distance travelled in 1hr=60×1=60 km Distance travelled in half hour= 40×1/2 =20 km Total distance = 60+20=80 km And total time taken = 1hr 30 min Average speed =total distance ÷total time = 80÷3/2=80×2÷3 =160÷3=53.34 km/ hr
Distance travelled in 1hr=60×1=60 km Distance travelled in half hour= 40×1/2 =20 km Total distance = 60+20=80 km And total time taken = 1hr 30 min Average speed =total distance ÷total time = 80÷3/2=80×2÷3 =160÷3=53.34 km/ hr
Lokeshk:
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